Edwin y



(No Model.) 3 Sheets-Sheet 1. E. Y. J UDD.

REPEATING- MECHANISM FOR CLOCKS.

Patented May 2, 1882.

' M/z'tzwsses- [nvezztmt (No Model.) 3 Sheets-Sheet; 2. E. Y. JUDD.

REPBATING MECHANISM FOR ULO0KS. No. 257,339. Patented May 2,1882.

Fig. 13.

W2 tzwss es [22 276.22 Z02.

N. vrrzns. Photohog p .Wnshmglon. 0.0.

(No Model.) a Sheets-Sheefl3. E. Y. JUDD.

REPBATING MECHANISM FOR CLOCKS.

No. 257,339. Patented May 2,1882.

M/i'tzzesses, fzzvezztor.

p UNITED STATES PATENT OFFICE.

EDXVIN Y. JUDD, OF HARTFORD, CONNECTICUT.

REPEATING MECHANISM FOR CLOCKS.

SPEGIFICATION forming part of Letters Patent No. 257,339, dated May 2,1852.

(N0 model.)

To all whom it may concern Be it known that I, EDWIN Y.JUD1),ofHartford,in the county of Hartford and State of Connecticut, have inventedcertain new and useful Improvements in Repeating Mechanism for Clocks;and I do hereby declare that the following is a full, clear, and exactdescription thereof, whereby a person skilled in the art can make anduse the same, reference being had to the accompanying drawings,and tothe letters of reference marked thereon.

Like letters in the figures indicate the same parts.

My improvement relates to an independent repeating mechanism to beattached toclocks for the purpose of striking the hour and minute, or asnear to the exact time as may be desired, whenever it is wished toknowthe time by sound.

The object of my invention is to provide a mechanism which shall bedetached from the ordinary time-keeping train of the clock, but whichcan at'will be made to indicate the exact time by night or day bystriking the hour an minutes upon suitable bells. Y I

It also has for its object the accomplishment of the foregoing result atall times without having intervals in which the mechanism will notoperate, as is the case with ordinary repea-ting mechanisms in clockswhich strike the hours in passing.

My invention also has for its object a simpler and better constructionof the striking mechanism than has heretofore been in use.

Inthe accompanying drawings, illustrating my invention,- Figure 1 is afront view of my improved repeating mechanism and partof anordinaryclock-train to which it is attached. Fig.2 is a top view of thesame, looking downward from the ordinary position when in theclock-frame. Fi 3'is aviewof the same from the left side. 1 A is theframe containing the clock-train, which may be of any ordinaryconstruction.

B is a snail fixed to the spindle which carrics the minute-hand of theclock. This snail is divided-into twelve steps, and forms the stop whichregulates the minute-striking mechanism. The twelvestepsdivide the hourinto die or arbor, and moving the reverse way from B by means of aratchet and pawl, one step for each revolution of B. The snail B isprovided with a projection, B, which in passing round pushes the pawl Cback over one tooth of the ratchet, which, as soon as 13 passes on andreleases it, is thrown forward by the springarm C and moves the snail Cone step. The snail C is provided with a series of steps forregulatingthehour-strikiugmechanism. Three sets of twelve steps aresupposed to be used, as indicated in the drawings; but any number oftwelves may be used, depending upon the throw of the pawl.

The wheels E, I and G constitute-the train of the repeating mechanism.They are supported by and turn in journals in the frame D. The wheel Eis driven by a spring in the usual manner, and the wheel G drives a fly,J, for regulating the speed. These wheels are formed with teeth, anddrive pinions upon the arbors ot' the next wheel in the manner usualwith clock-work. The wheel I has upon it a series of pins, F F F, &c.,of different lengths, projecting outward from its face. are for raisingthe hammers of the strikingoells, of which there are two-one for thehours and the other for the minutes.- The number of blows is regulatedby the number of pins which successive] y engage the striking-levers.

K is the striking-lever, which operates the hammer striking the hours.It rocks upon the fixed spindle L, which supports it, and upon Thesepins which it slides back and forth so as to engage a greater or lessnumber of the pins upon F. The opposite arm of this lever K acts uponthe short arm of the hammer-lever M to raise the hammer as each pinpasses. The hammerlever is of such a form that it will be acted upon inall positions of the striking-leverK. On the opposite side of the wheelI thereis a corresponding mechanism for striking the minutes, or eachfive minutes, as shown in the drawings. 1 v

I N is the striking-lever, turning and sliding back and forth on thefixed pin 0. Its arm opposite to that which engages the pins on F actsupon the short arm of the minute-hammerlever P, which it operates toraise the hammerin the same manner as thclever K upon the opposite sideof the wheel F.

Q and R are the two bells upon which the hour and minute hammers strike.They are intended to be of different pitch or tone, so as to be readilydistinguishable.

S and T are feelers, which, when released, as will be explained, drop onto the snails O and B, respectively, to determine the position of thestriking-levers and the number of strokes of the bells. The feeler S hasupon its rear end a rack which gears into the wheel U, which in turngears into a rack on the rod V. This rod moves the rockingleverW,pivoted at Z, and by means of the rod or tie Y operates thestriking-lever K so that it will engage more or less of the pins on F,according as the feelcr S drops farther in or out upon the snail 0.

2 is a spring which throws the feeler S against the snail when it isreleased, as will be described.

The fceler T has upon its rear end a rack, which gears into the wheel U,which operates a rack on the rod V and moves the lever W,

which is pivoted to the frame at Z. Thislever operatesthe striking-leverN- so that it will engagemore or less of the pins on F, according fixedframe of the mechanism. This releases thepinsattached toS and T at 2 andallowsthefeelers-to drop-onto-the snails. The lever 2 has another arm, 3which extends under the wheel F, and has a pin which passes into aslotin the circumference of'the'wheel when the parts are inthe positionshown in the drawings, but, when the bar 2 is raised and the movement ofthe parts commences, rides ona flat circular rim on the wheel F andholds the lever 2 up untilone whole revolution of the wheel F has beenmade. Assoon as the wheel has made one complete turn the pin againdropsinto the slot and allowsthe other armof the lever 2 to spring backby the force of the spring 2 and withdraw the feelers from the snails.

2' is a rod attached to the bar 2, which serves to unhook and start therepeating mechanism.- It operates upon the arm 2 of a bent lever, whichenters'intoa notch in the plate 2 upon the arbor of the wheel G, andlocks the mechanism when it is at rest. The rod 2 draws this arm 2 outand allows the movement to start when the bar 2 is raised. The otherarm, 3, of the lever 2 passes to the wheel E and enters one of a seriesof notches in its rim. From this notch itis raised by the movement ofthe bar 2 and rides upon the circumference of the wheel until it reachesthe next notch, which it falls into and allows the arm 2 to again engagewith the notch in the plate 2. This occurs at each complete revolutionof the wheel F.

The operation of my invention is as follows: Whenever at night or othertime it is desired to cause the repeating mechanism to strike the cordis pulled and the end of the bar 2 raised and then allowed to fall backinto its place by its weight or a suitable spring. This drops thefeelers onto the snails and unhooks the striking mechanism. According asthe position of the snail is varied by the clockmovement, the feelersdrop a greater or less distance and cause the striking-levers K and N toengage with more or less of the pins projecting from the wheel F. Thisis adjusted so that the proper number shall interpose to make thestriking conform to the hour and minute indicated by the dial of theclock. The pins pass first along the hour-striking lever and give thelast hour passed by the hands of the clock, and then the pins move roundto the minute-strikin g lever and give the minutes in the same manner.This makes one revolution of the wheel F, during which the locking-barshave been held up, as before described. At the end of the revolution thelocking-bars enter their respective slots and stop the movement, whichthen remains at rest until the bar 2 is again raised.

What I claim as my invention i's- 1. The hour-snail G, concentric withthe arbor of the minute-hand of a clock-train and provided with a seriesof teeth or notches on the side, in combination with said arbor and aratchet or spring pawl, O, and a device, 13, turning with theminute-arbor for operating said pawl, whereby the said snail is movedone notch for each revolution of the minutearbor, substantially asdescribed.

2. The combination of one or more feelers, S -T, connected by suitablemechanism with the striking-levers K N, for operating them, a

with said levers and a series of pins of different lengths upon thewheel F, whereby said levers are made to engage a greater or lessnumber-of the pins, according to the position of said feelers, and withmechanism for releasing said feelers at will and allowing them to dropupon snails operated by the clockmovement and withdrawing them after oneturn of the wheel F, substantially asdcscribed.

3. The combination of the bar 2 the lever 2 having the arm- 3 and thespring 2, the feelers S T, and the wheel F, having a slot for the end ofthe arm 3 whereby the said feelers are released andkept released duringthe revolution of the wheel F, and then withdrawn, substantially asdescribed.

4. The combination of the snails G B, the movement, the whole forming anindependent feelers S T, the levers K N, having their posirepeatingmechanism for clocks, substantially tions regulated by said feelers byconnecting as described. mechanism, the repeat-in g-train, constructedas described, and driven by a spring, H, or its EDWIN JUDD equivalent,the levers M P, carrying the ham- Witnesses:

mers of the bells Q R, the releasing-bar 2 the EDWIN F. DIMOCK,

lever 2 3, and the lever 2 3 with a clock- THEO. G. ELLIS.

